Soot-blower for water-tube boilers.



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J. E. BELL.

500T BLOWER FOR WATER TUBE BOILERS.

APPLICATION HLED MAR. 24. IQIT- I Patented Oct. 29, 1918.

3 SHEETS-SHE 2 kw fi -50mg J. E. BELL.

800T BLOWER FOR WATER TUBE BOILERS. AHLICATiON FILED MAR. 24. 1917.

1,283,048. Patented Oct. 29, L918.

3 SHEETS-SHEEI z.

' MZZQZ J. E. BELL. 800T BLOWER FOR WATER TUBE BOILERS.

. APPUCATIDN men MAR. 24. m1. 1,283,048. Patented Oct. 29, 1918.

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JOHN E. BELL, OF NEW YORK, N. Y.

SCOT-BLOWER FOR WATER-TUBE BOILERS.

Specification of Letters Patent.

Patented Oct. 29, 1918.

Application filed March 24, 1917. Serial No. 157,269.

' vcnicd certain new and useful Improvements in Soot-Blowers forVVater-Tube Boilers. of which the following is a specification.

This invention relates to soot blowers for water'tube boilers; itsobject being to pro= vide a simple and efficient construction andarrangement of parts whereby the blower pipes are supported in theregion of the boiler tubes and yet are effectually protected from thedestructive action of the intense heat from the furnace gases.

The invention comprises a. metallic structure within and by which ablower pipe is effectually incased and supported, said structure havingextended surfaces in con tact with the boiler tubes.

The invention also comprises a novel arrangement of the said structurein relation to the battling and the water tubes.

The invention also comprises various features of construction andcombinations of parts, which will be hereinafter described and claimed.

In the d..rwings:

Figure 1 is a longitudinal section of a "crtical water-tube boilerequipped with soot blower structures embodying the prin; ciple of myinvention.

Fig. 2 i an enlarged section of a. portion of the mud drum and adjacentparts of the water tubes and baflies. showin" the sectional blowerstructure at the bottom of the front ballle adjacent the mud drum.

Fig. 3 is an elevation of two adjoining sections of the said basalblower structure, the cap of one of the sections being removed.

Fig. 4 is an elevation of the detached cap.

Fig. 5 is a plan of Fig. 3.

Fig. 6 is a vertical section, as on the line 6-6 of Fig. 3.

Fig. 7 is an elevation of a portion of a b'alfle showing blower-pipesupporting and protecting sections in conjunction with the adjacentboiler tubes.

Fig. 8 is a vertical section through the battle showing two blower-pipesand their inclined nozzles, together with the supportmg and protectingstructures therefor, the upper structure being in section and the lowerstructure in elevation.

Fig. 9 is a horizontal section, as on the line 99 of Fig. 7.

Fig. 10 is a section through a modified structure, in a planelongitudinally of the boiler tubes.

Fig. 11 is a transverse section, on the line 1111 of Fig. 10.

Although I have herein illustrated my invention as applied to a verticalboiler of the Stirling type it is to be understood that the improvementsare applicable to other types of vertical water-tube boilers and also tohorizontal water-tube boilers.

Referring to the drawings. 12 designates the usual steam-andv'ater drumsof a boiler of the Stirling type; 13 the transverse mud drum; and 14 thebanks of tubes which converge from the steam-and-water drums,respectively, to the mud drum and afford intercommunication between theseries of drums.

15, 16, 17 designate batlic supported upon the backs of the three banksof tubes respectively. The baiiie 15 extends up from the mud drum andterminates short of the front steam-andqvatcr drum. being preferablyprovided with a rearwardly extending shelf 18 at or near its upper endto direct the gases into the second bank of tubes. The battle 16 extendsfrom the middle drum along the rear of the middle bank of tubes andterminates short of the lower end of the tubes; and the bathe 17 coversa portion of the rear bank of tubes and holds the gases in the latter asthey rise to the lip-take 19.

The general arrangement of'the bafiiing and associated parts, exceptingas hereinafter specifically pointed out. is preferably such asillustrated in my pending application for Letters Patent of the UnitedStates filed January 24, 1917, Serial No. 144,188 (being a division ofmy application Serial No. 35,786, filed June 23, 1915.) In my previousconstruction the bathing is composed of tiles set in place, and certainof the tiles in the respective battles are specially constructed toreceive and support blowerpipes having jet nozzles extending in thegeneral direction of the draft.

According to my present invention the blower pipes aresupported andincased by metal structures havin extended surfaces which contact withthe oiler tubes. Hence the structures are maintained approximatel at thetemperature of the tubes, since suc heat as the structures absorb israpidly conducted through the tubes to the water in the interior of thelatter. The rise in temperature of the structures thus being lin1- ited,the confined blower pipes are ell'ectually protected from the intenseheat of the gases flowing through the passes.

The preferred form of supporting and protecting structure for the blowerpipe 20 at the foot of the bafile 15 comprises a series of correspondingsections arranged and to end upon the top of the mud drum; each sectionbeing composed of two iron castings, namely a body 21 and a cap member22. The body is inclined on one side c0rrespondingly with thelower'portion of the rear tubes of the first bank, and it is providedwith a median longitudinal concave channel 23, shaped to fit snuglyagainst the wall of the adjacenttnbe. It is also provided at its endswith concavities 24 corresponding in curvature Withthe boiler tubes,whereby when the series of bodies are assembled the contiguous edges ofadjacent bodies closely hug the proximate boiler tubes, as shown. T herearward "side of each body is conveniently provided with spacedtip-standing webs 25 having projections 26 arranged to bear against theadjacent front tubes of the second bank and thus tend firml y to wedgethe body between the two banks of tubes. (See Fig. 2.) These Websterminate at their upper ends below the .top of the body and merge witha trough-shaped shelf portion 27 extending longitudinally of the body,whereby when the series of bodies are as sembled end to end a.substantially'continuous embracing support for the blower pipe 20 isprovided.

The outer curved portion of the shelf has formed therein a series ofspaced recesses 28 for the reception of the downwardly inclined nozzles29 of the blower pipe, and the body .ofithe casting isprovided at itsupper edge,

in the rear of the shelf, with spaced recesses 30 for the reception ofthe upwardly inclined nozzles 31. The cap 22 comprises a member havingits under portion longitudinally channeled to embrace the upper part ofthe blower pipe and also having upwardly inclined recesses 32appropriately formed and positioned to embrace the upper nozzles. Thecap has also on its rearward portion downwardly inclined extensions 33channeled to'embrace the tops of the lower nozzles.

When the series of supporting bodies are positioned on the mud drum andthe blower pipe with its jet nozzles is imposed on the continuoussupport the 'eby provided, the caps are applied to thliir complementarymembers; the pipe andits nozzles thus being incased by the sections. Theupwardly and forwardly extending nozzlesdischarge into and among thelower portions of the first bank of tubes, and the downwardly andrearwardly extending nozzles discharge into and among the lower portionsof the sec ond bank of tubes, the steam or air blasts to the respectivepasses thus being in the gencral direction of the draft.

The )refcrred form of sectional support-- ing and protecting structurefor the upper blower pipes 20 which are spaced upon the various halliesis illustrated in Figs. 1, 7, 8 and 9. Each of these upper structuressimilarly to the basal structure above described, comprises twocomplementary members 21, 22, which are so formed alldassociated as toincasc and protect, the blower pipe. These sections are snugly andtightly fitted into a transverse slot or opening in the baflle so astocconstitute, in eli'ect,a continuation of the latter, the innersurfaces of the sections being concaved, as at 24' so as to presentextended contact surfaces to the adjacent tubes, and the inner adjacentportions of the two members being appropriately formed to receive andprotect the inclined nozzle of the blower pi pr, similarly to the firstdescribed construction. Likewise the upper sectional structures arearranged and to end to providea continuous support and protector for theblower pipe and its nozzles. These structures being appropriatelymounted in' the respective battles, the steam or air blasts from thenozzles -to the adjacent passes are discharged -in tlie generaldirection of the draft. p

In Figs. 10 and 11 of the drawings, I have shown a modified structurewherein the cap is secured to the body 2] of the section by means, forexample, of screws 35, such. body having the characteristic extendedportions which contact with the boiler tubes. This construction,although applicable to vertical tubes, is more especially adapted to usewith horizontal boiler tubes.

It is to be understood that my invention is not limited to the exactdetails of construction above set forth, as the parts may be variouslymodified within the principle of my invention and the scope of theappended claims.

I claim- W i 1. In a water-tube boiler, the combination with a lu'rality(of spaced apart Water tubes, of a series of metallic bodies arranged inend to end relation to each other transvrsely of said tubes, each ofsaid bodies having elongated surfaces extending longitudinally of thetubes and shaped to contact throughout their length with the walls ofadjacent tubes and to span the space between said tubes, and a blowerpipe extending transversely of the water tubes and supported andincased-by said bodies, whereby such heat as the metallic bodies ab sorbis rapidly conducted through the walls of the tubes to the water in theinterior of.

tho latter and iho lualios arr thus main t aiaoii approxnnatoly at. thoimu mrature of tho lulms.

2 In a Wzzilr ilila: hoilnr 1-, wouiliinalion will; a plurality oispacial agnii'i. waivr a ulw anal, a imiih: inijawni lhvroim of :1

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Lwwn saui ink-es. and a blown pipe rxl'mul' i. in :1 mixer-Eula: imiizr2hr muuhina- Willi a pin ihiyr of 0- W i of a L'l'liS f iii 'ifliiitlinilirs, arrang'wi m in NH! inlaii n to ouch olhrr lrauswrsuiy of tin:inims and louaitwi within and i Hing part oi the Millie, each oi Saizilroilirs voihprisnig a two-part vlvnu-ni having oli'mg jaii-ii surlmosvan-ruling longitnilinaiig of rho lulios arul i-tllapr-(l lo i-onlzirlliimzz gluuu i'hi-ir h'nglh Wilh ilunail of mlmr in iulaw anil lo span:lujspar-: lHll MI sa Kelli-1'4. an l a lilour-r pipo supgnuiml Hiinmisiii i); irl lhinlii-s.

."i. in \Ullwuzi 1U: if'lil w in ilvr til ilio typo-liming a maul drumand hanks of \Hi Pi' lulu: mlni'vriging ill? a imiiiv inr twwn tho hanksterminating nun! drum, a metal strurlure located ho- LWFPH the bailloand the drum and having extended surfaces in close contact with themijaronl portions of tho lnhos. and a blower pipe supported and incasorlby said sl'ruolnri:

iii In a \ortiral water tuho boiler of the typo having a nunl drum andbanks of wan-r tuhcs converging thereto, a lmille he- Jww-n the banksterminating short of the mini ilruin, a sui-lional meta} structurelomieil between the! haliie and the drum and having extended surfaces inclose contact with tho adjacent port ions of the tubes, and a lilowvrpipe supported. and incasod by said sifiin'l lli.

T. in a vertical watortnho boiior of tho typo having a rural drum andbanks of warm tnhas converging thereto, a halllo ho- Ln'wn E'inhankstornnnating short of tho :nuil hum a metal structure localoil hotm-vnthe haiiio and the drum and having oxillltimi surfaces in close contactwith the ailjaoent portions of the tuhes, saiil silllrtin-o comprising aseries of body srctions having removable caps, and a blower piposupportoil and incasod by said sections and raps.

H. In a vertical water tube boiler of the type having a mud drum andbanks of water tuhns converging thereto. a haflio hetn'm'n the banksterminating short of the mud ilruni, a metai structure locatod helwvrntho hafiio and the drum and having oxiemlerl surfaces in close contactwith the adieu-out portions of the tubes, said structure comprisilw aseries of body sections having I'PXIXOWIBiQ caps, and a blower pipehaving? upwardly and downwardly ex- :riulerl jet, nozzles supported andincased by saiil ovations and caps.

Signed at the city of New York in the county and State of New York this23d day of March A. D. 1917.

JOHN E. BELL.

